Handheld Digital Thermometer is ideal for compost and soil applications when precise temperature reading is at a premium. This unit has an easy-to-read 4.5 digit display and a 100 hour battery life. Useful functions include a Min/Max button, a HOLD button, and a switch between Celsius and Farenheit. The Thermometer is accurate to 0.05% (+/-1.4F). Range is -58/328F AND The Fast Response Digital Probe from REOTEMP is an all stainless steel construction. It has a 3/8” stem diameter with a 1/4" tip diameter for fast response and a 36” stem length. The pointed tip makes for easy pile insertion. The type K thermocouple sensor plugs into any of REOTEMP’s digital thermometer units. Buy one today and begin the digital revolution in composting!